I've only been to Riazzi's three times, but I've never ordered anything I didn't like. I ordered a small 10" pizza for grins on my last visit and was very impressed! They also brought my minestrone soup out less than a minute from the time I ordered (the bus boy overheard my order and left to the kitchen before the waiter).
I would give it 5 stars but Riazzi's is just a bit lacking in the atmosphere category.